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<?php |
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namespace DataValues\Geo\Parsers; |
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use DataValues\Geo\Values\LatLongValue; |
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use ValueParsers\ParseException; |
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use ValueParsers\ParserOptions; |
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use ValueParsers\StringValueParser; |
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use ValueParsers\ValueParser; |
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/** |
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* ValueParser that parses the string representation of a geographical coordinate. |
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* |
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* The resulting objects are of type @see LatLongValue. |
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* |
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* Supports the following notations: |
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* - Degree minute second |
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* - Decimal degrees |
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* - Decimal minutes |
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* - Float |
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* |
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* And for all these notations direction can be indicated either with |
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* + and - or with N/E/S/W, the later depending on the set options. |
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* |
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* The delimiter between latitude and longitude can be set in the options. |
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* So can the symbols used for degrees, minutes and seconds. |
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* |
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* Some code in this class has been borrowed from the |
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* MapsCoordinateParser class of the Maps extension for MediaWiki. |
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* |
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* @since 0.1, name changed in 2.0 |
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* |
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* @license GPL-2.0+ |
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* @author Jeroen De Dauw < [email protected] > |
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*/ |
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class LatLongParser implements ValueParser { |
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/* public */ const TYPE_FLOAT = 'float'; |
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/* public */ const TYPE_DMS = 'dms'; |
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/* public */ const TYPE_DM = 'dm'; |
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/* public */ const TYPE_DD = 'dd'; |
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/** |
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* The symbols representing the different directions for usage in directional notation. |
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*/ |
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/* public */ const OPT_NORTH_SYMBOL = 'north'; |
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/* public */ const OPT_EAST_SYMBOL = 'east'; |
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/* public */ const OPT_SOUTH_SYMBOL = 'south'; |
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/* public */ const OPT_WEST_SYMBOL = 'west'; |
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/** |
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* The symbols representing degrees, minutes and seconds. |
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*/ |
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/* public */ const OPT_DEGREE_SYMBOL = 'degree'; |
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/* public */ const OPT_MINUTE_SYMBOL = 'minute'; |
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/* public */ const OPT_SECOND_SYMBOL = 'second'; |
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/** |
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* The symbol to use as separator between latitude and longitude. |
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*/ |
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/* public */ const OPT_SEPARATOR_SYMBOL = 'separator'; |
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/** |
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* @var ParserOptions |
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*/ |
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private $options; |
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public function __construct( ParserOptions $options = null ) { |
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$this->options = $options ?: new ParserOptions(); |
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$this->options->defaultOption( ValueParser::OPT_LANG, 'en' ); |
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} |
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/** |
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* @see ValueParser::parse |
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* |
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* @param string $value |
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* |
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* @throws ParseException |
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* @return LatLongValue |
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*/ |
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public function parse( $value ) { |
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foreach ( $this->getParsers() as $parser ) { |
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try { |
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return $parser->parse( $value ); |
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} catch ( ParseException $ex ) { |
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continue; |
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} |
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} |
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throw new ParseException( 'The format of the coordinate could not be determined. Parsing failed.' ); |
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} |
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/** |
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* @return StringValueParser[] |
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*/ |
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protected function getParsers() { |
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$parsers = []; |
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$parsers[] = new FloatCoordinateParser( $this->options ); |
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$parsers[] = new DmsCoordinateParser( $this->options ); |
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$parsers[] = new DmCoordinateParser( $this->options ); |
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$parsers[] = new DdCoordinateParser( $this->options ); |
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return $parsers; |
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} |
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/** |
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* Convenience function for determining if something is a valid coordinate string. |
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* Analogous to creating an instance of the parser, parsing the string and checking isValid on the result. |
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* |
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* @deprecated since 2.0, please instantiate and call isValid() instead |
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* |
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* @param string $string |
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* |
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* @return boolean |
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*/ |
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public static function areCoordinates( $string ) { |
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static $parser = null; |
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if ( $parser === null ) { |
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$parser = new self(); |
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} |
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return $parser->parse( $string )->isValid(); |
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} |
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} |
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DataValues /
Geo
